EP 4201969 A1 20230628 - POLYETHYLENE COMPOSITION FOR PIPES HAVING VERY GOOD IMPACT PROPERTIES AND SLOW CRACK GROWTH RESISTANCE
Title (en)
POLYETHYLENE COMPOSITION FOR PIPES HAVING VERY GOOD IMPACT PROPERTIES AND SLOW CRACK GROWTH RESISTANCE
Title (de)
POLYETHYLENZUSAMMENSETZUNG FÜR ROHRE MIT SEHR GUTEN SCHLAGEIGENSCHAFTEN UND BESTÄNDIGKEIT GEGEN LANGSAME RISSBILDUNG
Title (fr)
COMPOSITION DE POLYÉTHYLÈNE POUR TUYAUX DOTÉE DE TRÈS BONNES PROPRIÉTÉS DE RÉSISTANCE AUX CHOCS ET DE RÉSISTANCE À LA CROISSANCE DE FISSURE LENTE
Publication
Application
Priority
EP 21217319 A 20211223
Abstract (en)
A polyethylene composition comprising a base resin, the bas resin comprising (A) a first ethylene homo- or copolymer fraction, and (B) a second ethylene-hexene-1 copolymer fraction, wherein fraction (A) has a lower molecular weight than fraction (B), wherein the polyethylene composition further comprises carbon black in an amount of at least 3 wt% with respect to the total weight of the polyethylene composition, wherein the polyethylene base resin has a density of at least 950 kg/m<sup>3</sup>, and wherein the polyethylene composition has a melt flow rate MFRs of from 0.02 to 0.10 g/10 min.
IPC 8 full level
C08F 210/16 (2006.01); C08L 23/08 (2006.01); F16L 9/00 (2006.01)
CPC (source: EP)
C08F 210/16 (2013.01); C08L 23/0815 (2013.01); C08L 2308/00 (2013.01); F16L 9/12 (2013.01)
Citation (applicant)
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Citation (search report)
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Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 21217319 A 20211223